Home / 75,081.12-112,556.47-30,679.55

Finding the Fourth Proportional to 75,081.12, 112,556.47 and 30,679.55

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Solution

The fourth proportional to 75,081.12, 112,556.47 and 30,679.55 is: 45,992.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,081.12 : 112,556.47 = 30,679.55 : x
  2. Step 2: Convert to fraction form
    75,081.12/112,556.47 = 30,679.55/x
  3. Step 3: Cross multiply
    75,081.12x = 112,556.47 × 30,679.55
  4. Step 4: Simplify right side
    75,081.12x = 3,453,181,849.19
  5. Step 5: Solve for x
    x = 3,453,181,849.19/75,081.12
  6. Step 6: Final answer
    x = 45,992.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.